I prefer Method-2. Thanks Rajesh Battala
> -----Original Message----- > From: Vijay Venkatachalam [mailto:vijay.venkatacha...@citrix.com] > Sent: Thursday, March 7, 2013 7:17 PM > To: cloudstack-dev@incubator.apache.org > Subject: RE: [DISCUSS] Method/Algorithm to gather Health Check states > > > Any votes/re-assurances to the thought process from the Networking Universe? > > My Vote: Method-2 > > -Vijay > > -----Original Message----- > From: Vijay Venkatachalam > Sent: Wednesday, March 06, 2013 7:58 PM > To: cloudstack-dev@incubator.apache.org > Subject: [DISCUSS] Method/Algorithm to gather Health Check states > > Hi, > > As part of HealthCheck feature review, I have suggested to introduce a new > Capability for HealthCheck. So that any Network Element who has this > capability > can advertise it. > > Any alternative thoughts? > > The most important part of health check functionality is to update the status > of > a destination VM in CS DB (as seen by the LB Appliance) on a scheduled thread > launched every time interval. > > So on every iteration, the need is to go to every LB rule and find the status > of its > destinations. > > I can think of 2 ways to get this done > > Method 1: > A. List all the Health Monitors; For each monitor=> > B. Work backwards find the LbRule > C. Find the network for LbRule > D. Find the LB provider in the network > E. Call LoadBalancingServiceProvider.updateStatus by passing LB and its > destinations. > F. Which will reach the Resource and ultimately the Appliance > > Method 2: > A. List all the Networks; For each network => > B. Find the LB provider in the network > C. Find the NetworkElement for the LB provider > D. Proceed to (E.) If NetworkElement has the HealthCheck Capability > E. Call LoadBalancingServiceProvider.updateStatus by passing LB and its > destinations. > F. Which will reach the Resource and ultimately the Appliance > > I like the top down approach of Method 2. Any thoughts? > > Thanks, > Vijay V. > > > From: Vijay Venkatachalam [mailto:nore...@reviews.apache.org] On Behalf Of > Vijay Venkatachalam > Sent: Wednesday, March 06, 2013 6:10 PM > To: Vijay Venkatachalam > Cc: Rajesh Battala; cloudstack > Subject: Re: Review Request: AWS Style HealthCheck feature BugID : 664
